US4341134A - Tool for stripping insulating covering - Google Patents

Tool for stripping insulating covering Download PDF

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Publication number
US4341134A
US4341134A US06/176,631 US17663180A US4341134A US 4341134 A US4341134 A US 4341134A US 17663180 A US17663180 A US 17663180A US 4341134 A US4341134 A US 4341134A
Authority
US
United States
Prior art keywords
cutting blade
handles
handle
wire
stripping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/176,631
Other languages
English (en)
Inventor
Shigeo Yamazaki
Masahiko Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MCC Corp
Original Assignee
MCC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP1979140088U external-priority patent/JPS6026482Y2/ja
Priority claimed from JP14008779U external-priority patent/JPS5657618U/ja
Priority claimed from JP13027379A external-priority patent/JPS5653515A/ja
Priority claimed from JP1979140086U external-priority patent/JPS5852810Y2/ja
Priority claimed from JP14008979U external-priority patent/JPS5657620U/ja
Priority claimed from JP14008479U external-priority patent/JPS5657615U/ja
Priority claimed from JP14008579U external-priority patent/JPS5657616U/ja
Application filed by MCC Corp filed Critical MCC Corp
Assigned to MCC CORPORATION, reassignment MCC CORPORATION, ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NAKAMURA MASAHIKO, YAMAZAKI SHIGEO
Application granted granted Critical
Publication of US4341134A publication Critical patent/US4341134A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
    • H02G1/1202—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by cutting and withdrawing insulation
    • H02G1/1204—Hand-held tools
    • H02G1/1207—Hand-held tools the cutting element not rotating about the wire or cable
    • H02G1/1209—Hand-held tools the cutting element not rotating about the wire or cable making a transverse cut
    • H02G1/1212—Hand-held tools the cutting element not rotating about the wire or cable making a transverse cut using wire or cable clamping means

Definitions

  • This invention relates to a tool for stripping the insulator covering formed of an insulative material such as rubber or vinyl chloride from a covered electrical wire.
  • the conventional tool of this type used for stripping insulating coating from covered electrical wires comprises an electrical wire holding mechanism consisting of upper and lower jaws at the leading ends of a pair of handles pivoted to each other for opening and closing and a pair of upper and lower cutting blades movable to cut into the insulator coating on the wire and then strip the cut insulator coating from the wire core.
  • Such type of insulator coating stripping tools are disclosed in U.S. Pat. Nos. 3,125,908 and 3,146,645, for example.
  • the prior art tools also have the disadvantage than when the insulator coating is stripped off the covered electrical wire, the wire gripped between the upper and lower jaws is frequently displaced inadvertently and the cutting position on the insulator coating varies resulting in improper stripping of the insulator coating. Furthermore, the prior art tools have the disadvantage that since such tools include a mechanism adapted to move the two cutting blades in the axial direction of the wire and the upper and lower jaws are formed as parts separate from the handles, the construction is complicated and not compact and does not have sufficient rigidity. Furthermore, since the prior art tools are designed for use with only a covered solid wire, the tools cannot strip the sheath from a flattened covered electrical wire including a plurality of covered core wires.
  • one object of the present invention is to provide a tool for stripping the insulator coating from a covered electrical wire in which the insulator coating stripping operation is not interrupted by the handles whereby the insulator coating can be stripped from the core wire for a substantial distance along the length of the core wire.
  • Another object of the present invention is to provide a tool for stripping the insulator coating from a covered electrical wire in which when the insulator coating is to be stripped from the covered electrical wire, the tool is positively prevented from slipping from the cutting position on the insulator coating to thereby ensure cutting-off the proper length of insulator coating.
  • Another object of the present invention is to provide a tool for stripping the insulator coating from a covered electrical wire which has a simple and compact but rigid mechanism.
  • Another object of the present invention is to provide a tool for stripping the insulator coating from a covered electrical wire which can be simply operated.
  • Another object of the present invention is to provide a tool for stripping the insulator coating from a covered electrical wire which is easily adaptable for stripping a covered electrical wire of the insulator coating and also for stripping the sheath from a flattened covered electrical wire including a plurality of covered wire cores.
  • a tool for stripping the insulator covering from a covered electrical wire
  • the main body of the tool comprises a first handle having a lower jaw at the leading end and a second handle pivoted to the first handle by means of a shaft and a wire holding mechanism adapted to grip the wire upon closing of the two handles and cutting blades adapted to cut into the insulator covering on the covered electrical wire and pull the cut insulator covering off of the core wire along the length of the handles upon the closing of the handles are provided at the leading end portion of the main body projecting laterally of the handles.
  • FIG. 1 is a side elevational view of one embodiment of the invention showing the tool for stripping the insulating covering from a covered electrical wire with a portion thereof broken away;
  • FIG. 2 is similar to FIG. 1, but shows the upper cutting blade and the associated stripping blade in their lowered position;
  • FIG. 3 is similar to FIG. 2, but shows the associated stripping blade in its stripping position
  • FIG. 4 is an end elevational view of the tool in its condition as shown in FIG. 3;
  • FIG. 5 is a perspective view of the tool as shown in FIG. 1 with a portion thereof broken away.
  • reference numeral 1 denotes an upper handle of U-shaped cross-section having a lower jaw 2 integral with the leading end of the handle and the lower jaw has at the leading or free end thereof a lower holding portion 3 extending from the forward end of the lower jaw 2 and also projecting laterally of one surface 1' of the upper handle 1 and one surface 9' of a lower handle 9 of U-shaped cross-section.
  • the upper surface 3' of the holding portion 3 is provided with a groove 6 in which the roots of a lower cutting blade 4 and a plurality of guides 5 are held in position.
  • the lower cutting blade 4 and guides 5 are also positioned for projecting laterally of the surfaces 1', and 9' of the upper and lower handles 1 and 9, respectively.
  • a portion of the lower cutting blade 4 on one side thereof is provided with one or more arcuate blade edges 7 (each blade edge 7 is adapted to cut into the insulating covering on a covered solid wire) and another portion of the lower cutting blade on the other or opposite side thereof is formed with a blade edge 8 in the form of an elongated recess having the depth greater than that of the arcuate blade edges 7.
  • the blade edge 8 has a flattened bottom and is adapted to cut into the insulating covering of a flattened covered electrical wire such as a flattened vinyl sheathed cable.
  • the guides 5 are secured to one or the outer end of the outermost arcuate blade edge 7, one or the outer end of the blade edge 8 and the boundary between one or the outer end of the innermost arcuate blade edge 7 and the other or inner end of the blade edge 8, respectively, in the illustrated embodiment.
  • the leading end of the lower handle 9 is pivoted by means of a stub shaft 10 to the intermediate position of the upper handle 1 where the rear end of the lower jaw 2 is positioned.
  • a return spring 13 Disposed about the stub shaft 10 is a return spring 13 having one end abutting against a groove 11 formed in the middle portion of the upper handle 1 and the other end abutting against the inner surface of the U-shaped lower handle 9.
  • Reference numeral 14 denotes an elongated guide opening formed in substantially the central portion of the length of the upper handle 1 and a guide member 15 is received in the guide opening 14 and is pivoted in substantially the central portion thereof to the upper handle 1 by means of a transverse bolt 16.
  • an upper holding portion 17 which projects laterally of the surfaces 1' and 9' of the upper and lower handles 1 and 9, respectively like the lower holding portion 3.
  • the upper holding portion 17 is adapted to move toward the lower holding portion 3 as the lower handle 9 is pivoted in the direction toward the upper handle 1 as will be described hereinafter.
  • the undersurface 17' of the upper holding portion 17 faces the upper surface 3' of the lower holding portion 3 and thus the surfaces 17' and 13' of the upper and lower holding portions 17 and 13 provide an electrical wire holding mechanism which clamps the wire as the lower handle 9 approaches the upper handle 1.
  • a stop member 18 is integrally formed on one side of the upper holding portion 17 and projects downwardly a small distance from the undersurface 17' of the holding portion 17 (FIGS. 1 and 4). The stop member 18 functions to limit the pivotal movement of the guide member 15 as the guide member pivots about the axis of the bolt 16 in the counter-clockwise direction as seen in FIGS.
  • the anti-slip member 38 has a pointed leading edge which is adapted to abut against the cut end edge of the insulating covering remaining on the electrical wire when, after the cooperating lower and upper blades 4 and 30 cut into the insulating covering, the upper blade 30 is moved so as to remove the coating from the wire.
  • serrations can be provided on the undersurface 17' of the upper holding portion 17 and on the upper surface 3' of the lower holding portion 3 for preventing the electrical wire from slipping off.
  • Reference numeral 21 denotes a connector rod which is pivoted at the lower end to the lower handle 9 in substantially the central portion of the latter by means of a stub shaft 22 and is also pivotably supported on a pin 23 loosely received in the slot 20 in the guide member 15.
  • the guide member 15 is pivotably connected to the lower handle 9 by the connector rod 21.
  • a spring 24 Disposed about the pin 22 is a spring 24 which has one end abutting against the inner surface of the lower handle 9 and the other end abutting against the connector rod 21 whereby a resilient force acts on the rod 21 in the counter-clockwise direction as seen in FIGS. 1 to 3 inclusive.
  • Reference numeral 26 denotes an upper cutting blade holder having an upper cutting blade support portion 27 for holding the upper cutting blade 30 at the leading end and received in the guide opening 14 in parallel with the guide member 15.
  • the upper cutting blade holder 26 has an elongated slot 28 in substantially the central portion thereof for loosely receiving the above-mentioned bolt 16 and also a through bore 29 in the rear portion for pivotably receiving the above-mentioned pin 23.
  • the upper cutting blade holder 26 is also pivotably connected to the upper handle 1 and further pivotably connected at the rear end to the lower handle 9 by means of the connector rod 21.
  • the upper cutting blade support portion 27 is positioned behind the holding portion 17 and projects laterally of the surfaces 1' and 9' of the upper and lower handles 1 and 9 in the same direction as the holding portion 17.
  • the front surface 27' of the blade support portion 27 has the upper cutting blade 30 secured thereto in opposition to the lower cutting blade 4 and the upper blade 30 cuts into the insulating covering on the electrical wire together with the lower cutting blade 4.
  • the upper cutting blade 30 projects laterally of the surfaces 1' and 9' of the upper and lower handles 1 and 9.
  • a portion of the cutting blade 30 on one side thereof is provided with a plurality of arcuate blade edges 31 which correspond in number to and is aligned with the blade edges 7 on the lower cutting blade 4.
  • the edges 31 are complementary to the cutting edges 7.
  • Another portion of the cutting blade 30 on the other or opposite side thereof is provided with an elongated blade edge 32 which is complementary to and in alignment with the edge 8 on the lower cutting blade 4.
  • Reference numeral 33 denotes an insulating covering stripping member which is adapted to abut against the end surface of the insulating covering on the electrical wire where the lower cutting blade 4 has cut and move together with the upper cutting blade 30 in parallel to the longitudinal direction of the upper and lower handles 1 and 9 to thereby aid the stripping of the insulating covering.
  • the stripping member 33 has a stripping portion 34 at the leading end and a slot 35 in the rear portion and is positioned between the guide member 15 and the upper cutting blade holder 26 within the guide opening 14. Like the upper cutting blade holder 26, the stripping member 33 is also provided in substantially the central portion thereof with a slot 36.
  • the bolt 16 extends loosely through the slot 36 to pivotably connect the member 33 to the upper handle 1 and the pin 33 extends loosely through the rear slot 35 to pivotably connect the member 33 to the central portion of the lower handle 9 through the connector rod 21.
  • the stripping member 33 projects laterally of the surfaces 1' and 9' of the upper and lower handles 1, 9 behind the lower cutting blade 4 in the same direction as the lower holding portion 3.
  • the leading end of the stripping portion 34 of the stripping member 33 is in engagement with the inner side of the lower cutting blade 4.
  • a stripping blade 37 may be attached to the stripping portion 34 projecting laterally of the surfaces 1' and 9' of the upper and lower handles 1 and 9 like the lower cutting blade 4.
  • the blade edge of the stripping blade 37 extends parallel to the lower cutting blade 4 and has a configuration corresponding to the blade edges 7 and 8 so as to cut into the insulating covering of the electrical wire in cooperation with the blade edges 7 and 8.
  • a covered electrical wire from which the sheath or covering is to be removed such as a flattened covered electrical wire is passed into the space between the guides 5 from the front thereof or from one side of the guides with the axis of the wire extending in the longitudinal direction of the handles 1 and 9 in the position of the tool as shown in FIG. 1 wherein the lower handle 9 is its fully open position.
  • a particular or predetermined area of the wire is positioned on the blade edge 8 of the lower cutting blade 4. Then, the operator grips the upper and lower handles 1 and 9 to pivot the lower handle 9 about the pin 10 in the counter-clockwise direction (as seen in FIG. 1) against the force of the spring 13.
  • the rear portion of the upper cutting blade holder 26 is also pushed up by the pin 23 to pivot about the bolt 16 in the counter-clockwise direction as seen in FIG. 1 to thereby move the upper cutting blade 30 supported by the upper blade support portion 27 downwardly toward the lower cutting blade 4 on the lower holding portion 3.
  • the slot 35 in the rear portion of the stripping member 33 extends in the same direction as the pin 23 moves upwardly and thus, since the pin 23 moves upwardly along the slot 35, no pivotal movement of the stripping member 33 will occur whereby the stripping-off portion 34 is held in contact with the lower holding portion 3 with the stripping blade 37 disposed adjacent to the lower cutting blade 4.
  • the upper blade 30 When the lower handle 9 is moved upwardly in the manner described above, the upper blade 30 is caused to be pressed against the flattened covered wire positioned on the lower cutting blade 4, the upper ends of the guides 5 enter the corresponding recesses 19 in the undersurface 17' of the holding portion 17, the blade edges 8 and 32 of the lower and upper cutting blades 4 and 30, respectively, cut into the insulating covering on the covered electrical wire and at the same time, the anti-slip member 38 provided on the undersurface of the upper holding portion 17 along the forward surface of the upper blade 30 and the stripping blade 37 positioned adjacent to the inner side of the lower cutting blade 4 also cut into the insulating covering.
  • the wire is positioned on the arcuate blade edge 7 of the lower cutting blade 4 in the same manner as described in connection with the insulator coating stripping-off treatment on the flattened covered electrical wire and the lower handle 9 is gripped to be pivoted upwardly toward the upper handle 1, the blade edge 7 of the lower cutting blade 4, the blade edge 31 of the upper cutting blade 30 and the stripping-off blade 37 cut into the insulating covering on the covered solid wire to a predetermined depth and the upper blade 30 and stripping blade 37 move along the core wire whereby the insulator coating is pulled off the core wire.
  • the insulating covering stripping operation is performed in the axial direction of the wire and thus, the stripping can be efficiently performed even in a limited space.
  • the upper and lower cutting blades project laterally of the side surfaces of the upper and lower handles, the electrical wire positioned between the upper and lower cutting blades will not impede the movement of the handles, the lower cutting blade can be positioned in any desired position along the wire to thereby ensure positive stripping of the insulator coating covering a substantial distance in the longitudinal direction of the wire.
  • the wire is held against movement and displacement to thereby ensure positive cut off of the insulating covering from a precise position thereon.
  • the lower cutting blade is secured to the lower jaw which is integral with the leading end of one of the handles and does not move during the stripping operation, the construction of the tool can be made simple and rigid.
  • the guide member, upper cutting blade holding portion and stripping member are mounted on the handle by the common shaft and operated by the common connector rod, the operation mechanism of the tool is simple and compact and can be operated in a simple manner.
  • the insulating covering can be stripped off of a flattened covered electrical wire comprising a plurality of covered wires as well as a covered solid wire.
US06/176,631 1979-10-09 1980-08-08 Tool for stripping insulating covering Expired - Lifetime US4341134A (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP14008779U JPS5657618U (de) 1979-10-09 1979-10-09
JP13027379A JPS5653515A (en) 1979-10-09 1979-10-09 Tool for separating insulating coating of electric wire
JP54-140084[U]JPX 1979-10-09
JP1979140086U JPS5852810Y2 (ja) 1979-10-09 1979-10-09 電線の絶縁被覆剥離用工具
JP54-130273 1979-10-09
JP1979140088U JPS6026482Y2 (ja) 1979-10-09 1979-10-09 電線の絶縁被覆剥離用工具
JP14008979U JPS5657620U (de) 1979-10-09 1979-10-09
JP14008479U JPS5657615U (de) 1979-10-09 1979-10-09
JP14008579U JPS5657616U (de) 1979-10-09 1979-10-09

Publications (1)

Publication Number Publication Date
US4341134A true US4341134A (en) 1982-07-27

Family

ID=27565980

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/176,631 Expired - Lifetime US4341134A (en) 1979-10-09 1980-08-08 Tool for stripping insulating covering

Country Status (7)

Country Link
US (1) US4341134A (de)
AT (1) AT376068B (de)
AU (1) AU533375B2 (de)
DE (1) DE3030610C2 (de)
FR (1) FR2467499A1 (de)
GB (1) GB2060467B (de)
IT (1) IT1147768B (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4395928A (en) * 1980-08-29 1983-08-02 C. A. Weidmuller Gmbh & Co. Hand tool for stripping insulation from wire
DE3241530A1 (de) * 1982-11-10 1984-05-10 Josef 4715 Ascheberg Krampe Abisolierzange
US4485696A (en) * 1980-03-17 1984-12-04 Zdzislaw Bieganski Apparatus for wire stripping
US5131299A (en) * 1989-03-04 1992-07-21 Franz Krampe Insulation stripping tool
US5257555A (en) * 1992-04-06 1993-11-02 Teledyne Kinetics Thermal wire stripper having a static discharge circuit
AU644214B2 (en) * 1990-09-27 1993-12-02 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. An arrangement for mounting a tool frame on rails
US5469762A (en) * 1992-07-02 1995-11-28 Krampe; Franz Device for stripping electric conductors and/or wires
US20080229884A1 (en) * 2004-01-22 2008-09-25 Horst Hofmann Wire Stripper Which Can be Automatically Adapted to Different Conductor Cross Sections
US20160226229A1 (en) * 2015-02-03 2016-08-04 Wezag Gmbh Werkzeugfabrik Stripping Tool
US11515692B2 (en) * 2020-02-12 2022-11-29 Steve Revak Wire stripping assembly

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8515082D0 (en) * 1985-06-14 1985-07-17 Plas Plugs Ltd Cable stripping device
FR2606312B1 (fr) * 1986-11-12 1991-03-29 Peixoto Daniel Instrument a main du type pince permetta nt d'exercer successivement sur un objet au moins deux actions distinctes developpees a partir d'un meme mouvement commande par un utilisateur
DE3733358C1 (de) * 1987-10-02 1989-03-16 Wezag Gmbh Handzange zum Abisolieren von Leiterenden
IT1395470B1 (it) * 2009-07-31 2012-09-21 Mollificio Apuano S R L Utensile manuale per l'applicazione di un dispositivo di messa in posa di piastrelle e simili articoli su una superficie da rivestire
ES2580303B1 (es) * 2015-02-19 2017-05-31 Germans Boada, S.A. Dispositivo de nivelación de piezas de recubrimiento

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2659254A (en) * 1951-02-14 1953-11-17 Rockford Wire Stripper Co Wire stripper
US3125908A (en) * 1961-05-13 1964-03-24 rozmus
US3146645A (en) * 1961-08-07 1964-09-01 Ideal Ind Straight line wire stripper
US3383959A (en) * 1967-08-10 1968-05-21 Boeing Co Wire stripping device
US3543616A (en) * 1968-03-21 1970-12-01 Marion W Bradley Slitter and insulation for tape-type wire
US3596541A (en) * 1967-11-04 1971-08-03 Zdzislaw Bieganski Wire stripping tools

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB100736A (de) * 1915-06-22 1917-03-08 Gerald Wood Stuart
GB1142602A (en) * 1965-06-28 1969-02-12 Patrick Thomas Enright Improvements in or relating to stripping and cutting tool
DE2402187C3 (de) * 1974-01-17 1980-02-07 C. A. Weidmueller Kg, 4930 Detmold Handzange zum Abisolieren von Leiterenden

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2659254A (en) * 1951-02-14 1953-11-17 Rockford Wire Stripper Co Wire stripper
US3125908A (en) * 1961-05-13 1964-03-24 rozmus
US3146645A (en) * 1961-08-07 1964-09-01 Ideal Ind Straight line wire stripper
US3383959A (en) * 1967-08-10 1968-05-21 Boeing Co Wire stripping device
US3596541A (en) * 1967-11-04 1971-08-03 Zdzislaw Bieganski Wire stripping tools
US3543616A (en) * 1968-03-21 1970-12-01 Marion W Bradley Slitter and insulation for tape-type wire

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4485696A (en) * 1980-03-17 1984-12-04 Zdzislaw Bieganski Apparatus for wire stripping
US4395928A (en) * 1980-08-29 1983-08-02 C. A. Weidmuller Gmbh & Co. Hand tool for stripping insulation from wire
DE3241530A1 (de) * 1982-11-10 1984-05-10 Josef 4715 Ascheberg Krampe Abisolierzange
US4557164A (en) * 1982-11-10 1985-12-10 Josef Krampe Wire and cable stripping device
US5131299A (en) * 1989-03-04 1992-07-21 Franz Krampe Insulation stripping tool
AU644214B2 (en) * 1990-09-27 1993-12-02 Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. An arrangement for mounting a tool frame on rails
US5257555A (en) * 1992-04-06 1993-11-02 Teledyne Kinetics Thermal wire stripper having a static discharge circuit
US5469762A (en) * 1992-07-02 1995-11-28 Krampe; Franz Device for stripping electric conductors and/or wires
US20080229884A1 (en) * 2004-01-22 2008-09-25 Horst Hofmann Wire Stripper Which Can be Automatically Adapted to Different Conductor Cross Sections
US7513177B2 (en) * 2004-01-22 2009-04-07 Horst Hofmann Wire stripper which can be automatically adapted to different conductor cross sections
US20160226229A1 (en) * 2015-02-03 2016-08-04 Wezag Gmbh Werkzeugfabrik Stripping Tool
US10910801B2 (en) * 2015-02-03 2021-02-02 Wezag Gmbh Werkzeugfabrik Stripping tool
US11515692B2 (en) * 2020-02-12 2022-11-29 Steve Revak Wire stripping assembly

Also Published As

Publication number Publication date
ATA468580A (de) 1984-02-15
AU6105780A (en) 1981-04-16
DE3030610A1 (de) 1981-04-23
IT1147768B (it) 1986-11-26
DE3030610C2 (de) 1983-11-24
FR2467499B1 (de) 1984-10-26
AU533375B2 (en) 1983-11-17
IT8068316A0 (it) 1980-08-26
AT376068B (de) 1984-10-10
GB2060467A (en) 1981-05-07
GB2060467B (en) 1983-12-21
FR2467499A1 (fr) 1981-04-17

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